Mary HartAfter nearly three decades of feeding the masses their daily diet of pop culture and celebrity news, Mary Hart has announced she's leaving 'Entertainment Tonight.' Hart, who joined 'ET' in 1982, will move on after the show's 30th season, which begins Sept. 13.

"I've had the privilege of spending 29 years doing something I love -- how often does that happen?" she said in a statement Thursday."I only meant to be at 'ET' for three years, suddenly it's almost 30!"

Hart, 59, said she's reached a point in her career where she realizes it's time to change things up. "There are many things I want to do in my life and I'd better get on with them."